Laser Peripheral Iridotomy (PI)

What exactly is this?

Laser PI is a highly precise laser treatment, targeted at patients with shorter eyes and crowded drainage angles at risk of a spike in eye pressure. The associated conditions are primary angle closure suspects or chronic angle closure glaucoma. It is generally used as a first-line treatment.

PI is an in-office procedure and takes anywhere between 15-30 minutes. A pressure lowering and numbing drop is applied to the eye that requires treatment. A lens is then placed on the eye to keep it steady and assist in laser delivery. Laser energy is applied in rapid succession to the peripheral iris, the coloured part of the eye. This creates a microscopic hole, resulting in opening of the drainage angle and better fluid outflow. At the time of treatment, you may experience some discomfort, but this usually settles.


You will need to have an eye pressure check 15 minutes post procedure. Drops will be required in the treated eye for a week post procedure.

Complications are uncommon, as follows:

  • Elevated eye pressure, which may be persistent and require further intervention
  • Inflammation of the coloured part of the eye (Iritis)
  • Bleed in the eye (Hyphaema)
  • Clouding of the window of the eye (Corneal oedema)

Should I do something about this?

For a personalised consult, give us a shout at EyeHub.

Other Eye Conditions

Click through for more information on other common eye conditions.

If you have any questions, please contact us on 07 5220 8990.